the reply was not only for You(it was intended for amigos4),
"flimsy" is maybe more precise then "subtle",although my dictionary reads that there are more meanings of this word.The sentence of amigos4 was ok, but too strong or cordial.
"There is a point in it" seems ok. I'd say how you continue from there makes more of an impact than those words per se. That's because the connotation in that sentence is pretty neutral, perhaps even inching to the negative side. I find it easier to continue with "but" or "however" (like "There's a point in it. But we must get our focus right, get that thing done first, etc."), or with something neutral ("There's a point in it. How would you like to incorporate it?", "Let's go ahead with...", "How will it affect the...").